Apparatus to control fluid flow through a tube



FIG. 1 is a front, bottom, and right side perspective view of the apparatus to control fluid flow through a tube, showing my new design;

FIG. 2 is a back, bottom, and left side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a back elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a front, bottom, and right side perspective view showing the door open thereof.

The broken lines in the drawings represent an environmental subject matter and form no part of the claimed design. 

CLAIM The ornamental design for an apparatus to control fluid flow through a tube, as shown and described. 